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Thread: help boost goin up and down

  
  1. #1
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    kidda12345's Avatar
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    help boost goin up and down

    hi .
    im running a z20let converted astra i did the transplant about nov last year and not had many problems but recently boost has been all over the shop anywhere between 1/2 and 2 bar it sounds like its boosting but no power also has a strange whooshing noise when under load before someone says it iv checked for boost leaks and all pipework is fine it all started when it went in for a service i later went back to the garage and the only unusual thing they said was that there was oil in the intercooler down to it being sucked from rocker cover into air system nothing bad but i learnt they cleaned the system with carb cleaner not my choice but hey . . they asure me they didnt spray it before the maf sensor but wundering if this might of knakerd the map sensor or anything else
    pleeaaasssssseeeeee someone help lol

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    You checked boost solenoids?
    PHASE 3 ON A SWITCH WIV A GARRETT

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    same problem solved by replacing wastegate actuator. it used to stuck and caused boost fluctuations.

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    Quote Originally Posted by ZAF_GSI View Post
    You checked boost solenoids?
    is there a way of checking apart from paying vauxhall silly amounts of money fo a tech 2 plug in ?

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